STEFAN SIEBERT, PHIL R. PUGH, STEVEN H. D. HADDOCK & CASEY W. DUNN (2013) Re-evaluation of characters in Apolemiidae (Siphonophora), with description of two new species from Monterey Bay, California. Zootaxa 3702 (3), 201–232 - Siebert, Stefan; Pugh, Phil R.; Haddock, Steven H.d.; Dunn, Casey W. (Zootaxa, 2013)